Strong Password Generator
Generate strong, secure random passwords online. Free, no signup, runs entirely in your browser.
Click generate...
Strength estimate:
Frequently asked questions
- Is this password generator safe to use online?
- Yes. Passwords are generated locally in your browser with the Web Crypto API (crypto.getRandomValues), a cryptographically secure random source, and nothing is ever sent to a server.
- How long should a password be?
- Aim for at least 12 to 16 characters. This tool accepts 4 to 128 characters, and every extra character multiplies the number of possible combinations, so longer is always stronger.
- What does the strength estimate mean?
- It estimates entropy in bits, roughly the length times the log2 of the character set size. Above 60 bits is labeled strong and above 100 bits very strong, which is far beyond practical brute-force reach.
- Can I use these passwords for my bank account?
- Yes. The randomness is cryptographically secure and nothing is logged or transmitted. For best results, use a unique password for every account and keep them in a password manager.
This tool runs entirely in your browser. No data is uploaded anywhere.